New check

Comparison

Mailster vs MailPoet

Mailster lands on Depends, and MailPoet lands on Worth it.

Mailster

Depends

Confidence: Medium

Buy it if you run a WordPress site and want newsletter sending without monthly SaaS fees.

Read the full report

MailPoet

Worth it

Confidence: Medium

Buy it if your site runs WordPress and you want cheap, native newsletters and WooCommerce emails . the free tier covers small lists.

Read the full report

Mailster versus MailPoet
Compare	Mailster	MailPoet
Verdict	Depends	Worth it
Best for	Small WordPress sites	WordPress site owners
Who it's not for	High-volume senders needing managed deliverability	Non-WordPress sites . the plugin is useless there
Privacy	Several reported vulnerabilities (reflected XSS, local file inclusion) around v4.0.6; keep the plugin updated.^⁹	Multiple CVEs on record, including a 2014 flaw mass-exploited in the wild; patch promptly.
Support quality	Users report weeks-long support waits	Trustpilot 1.6/5; complaint threads on Reddit
Public sentiment	Users praise the value for the price and ease of use, but some report support delays and weigh it against standalone email services.	Users praise the WordPress-native simplicity and price, but support and deliverability draw frequent complaints.
Biggest gotcha	Ownership changed hands; verify update cadence before committing.^⁸	Support quality is the dominant Trustpilot complaint¹⁴

Pick Mailster when

Small WordPress sites
Budget-conscious newsletter senders
Bloggers wanting in-dashboard sending
Buyers who hate subscriptions

When Mailster is not a fit

High-volume senders needing managed deliverability
Non-WordPress sites
Teams wanting vendor-run infrastructure and SLAs
Anyone unwilling to maintain plugin updates

Pick MailPoet when

WordPress site owners
WooCommerce stores
Budget newsletter senders
Blog post notification emails

When MailPoet is not a fit

Non-WordPress sites . the plugin is useless there
Teams needing advanced marketing automation
Anyone unwilling to patch plugin vulnerabilities promptly
Very large lists needing dedicated deliverability management

Sources

Mailster official sitemailster.co
official
Mailster pricing pagemailster.co
official
Mailster templates (400+)mailster.co
official
WP Mayor Mailster reviewwpmayor.com
review
Mailster vs Mailchimp cost comparisoninboxreads.co
review
Reddit: Email marketing recommendationsreddit.com
review
WordPress.org support: Awful performance and supportwordpress.org
review
Sender.net: WordPress email marketing (ownership change)sender.net
news
Patchstack: Mailster 4.0.6 reflected XSSpatchstack.com
security
Acunetix: Mailster 4.0.6 local file inclusionacunetix.com
security
Alternatives.co Mailster pricingalternatives.co
review
Blogvault: MailPoet vs Mailsterblogvault.net
review
MailPoet . WordPress.org plugin pagewordpress.org
review
MailPoet Trustpilot reviewstrustpilot.com
review
MailPoet G2 reviewsg2.com
review
MailPoet AppSumo reviewsappsumo.com
review